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. A. SPEHHY AND C. R, UMBENHUWER. CONCRETE BLOCK MACHINE.

APPLECAUON FILED' SEF''. HHB.

Patent@ J une 24, i919.

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W/T/YESES /7' OPA/EY,

T. A. SPERRY AND C. Rv UIVIBENHOWER.

CONCRETE BLOCK MACHINE.

APPLICATION FILED SEPT. 7. IQIS.

June 24, IOIO.

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CONCRETE BLOCK Mmmm.

APPLICATION FILED SEPT. 7.1918. 1

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for a purpose hereafter apparent. -Lifting dogs 30 are also provided with notches or recesses 41 on the opposite edges near the lower extremity of said dogs, these notches being provided with striking surfaces 42 and 43 for co-aetion with studs 37.

Upper .compression head 10 is connected to and operated by levers 17 through the side bars 44 which are olf-set as at 45 to provide clearance for hubs of levers 17 when in position shown in Fig. 3. Top frame 12 is provided with lugs 47 which contact la'terally with bars 44 as at 46 and rearwardly with the same bars as at 48 for pur-poses to be hereafter explained. The mold or form 9 consists essentially of a frame. 4S which may be of any size, shape or con- :figuration fxedly attached to a base member 49 and preferably spaced therefrom by lugs or supports 5l and may be provided with suitable core members 50. Base 49 is providedV with a plurality of downwardly projecting lugs 53 which are detachably connected to frame 12 by bolts 5:2. The molds are provided with loosely fitting pallets 54 which are supported as at 55 onlifting rods 21 and which serve as a lower compression and ejection plate forV the block or com- A similar plate 57 is detachably connected to the frame 58 of upper compression head 10, this frame being provided with projecting lugs 59 carrying horizontal shaft 60 to which is pivotally connected the upper ends of side bars Frame 58 may be stiifened, if so desired. by a truss-rod 61, and is also provided with projecting lugs 59 which Contact in certain positions with Vthe upper face of mold 48 to limit the downward motion of said compression bead 10. To lugs 59' are pivotallyconnected a plurality of links 62 carrying a. scraper bar V63. The upper edges of mold 48 carry a plurality of strikes or stops 64 which contact with side bars 44, as will be hereinafter explained.

There may also be provided a pluralit of latches 65 pivotally attached to side frames 1l in proximity to lifting dogs 30 forpurposes to be hereinafter made evident.

In operation compression head l0 is moved backward to the position shown in Fig. 3, the compressing mechanism being essentially in t-he position shown in Fig. A pallet 54 is placed in the bottom of the mold resting on base 49. The mold is then filled with prepared concrete and the compression head 10 is manually moved forward to position shown in Fig. 2. The scraper 63 in passing over the mold sweeps off any surplus quantity of concrete` thus measuring a Idefinite quantity within the mold. Lever 1S is then drawn forward. Vthe lever arm 34 causing compression head 10 to move downward. This head is positioned or guided in its downward travel by lugs 64 and 46 contacting with side bars 44 which causes the top pallet 57 to enter the top of the mold. The same motion of lever 1S causes stud 33 to move upwardly and through Vthe lifting dogs 30 and cross heads '25 produces an upward motion-of rods Q1 and pallet 54, thus compressing the concrete between pallets 54 and 57. lt will be noticed that recess 3S in the dogs 30 is deeply indentured as at 39, so that the upper compression head l() moves downward a predetermined dis tance before the upward motion of bottom pallet 54 commences, thus insuring the top pallet 57 to be entered within the mold before bottom pallet 54 commences its upward motion and so prevents the unintentional ejection of any of the concrete from 'the top of the mold.

When the compressive action is complete. as in Fig. 6, the handle 18 is again raised to a vertical position and swung backward until-studs 37 engage with recesses 41. the heel40 of recess 38 contacting with the hubs of lifting levers 17 to insure studs 37 passing over the points 42 and contacting with striking surfaces 43 so they will enter recesses 41. At the same time compression liead 10 is swung backward to approximately the position shown in Fig. and handle 1S is then again drawn forward and the bottom pallet 54, together with the compressed block- 56, is forced upwardly out of the mold by the dogs 30. cross heads 23 and lifting rods :'21, as shown in Fig. L. -T he block and pallet are then manually removed. a new pallet placed in position and lever 1S returned to normal position` when the'. cycle of operations is complete. ln returning to normal position after ejecting a block the od-set portions 3l of dogs 30 come in contact with the ends of latches 65 which temporarily retards their downward motion and causes studs 37 to become disengaged from recesses 41, leaving these dogs in position to be again acted upon by studs 33.

It will be further seen that blocks of varying thicknesses may be made within any given mold by adjusting the lock nuts 23 engaging with cross heads 25. It is found preferable in practice to surround the threaded portions of rods 21 with protecting tubes where these rods slide vertically within the guides :20. It will also be seen that Aby suitably adjusting the lock nuts 23 upon the rods at either end or either side of the machine, that. blocks may be made that will taper either end-wise or side-wise, making blocks suitable for arches or cul- \-'e rts. lt will also be understood that. molds of any size or shape may be employed, making blocks for either curved or straight work, and that these molds may be easily and quickly interchanged by simply removing the bolts 52 from the lugs 53 and frame lll monroe l2 and lifting the mold '0E complete with cores in place, The top pallet is detached from frame 58 by screws (not shown) and replaced with e. di'erent pallet to suit the mold employed.

Hoving thus descrihed our invention, what' we claim as new and desire toV protect hy these Letters Patent, is:

l. ln a concrete block machine, the conihinetion with a. freine und mold, of n handle opeinting u plurality of compressing levers, said levers compressing the block simultaneously from above and from helow with e, single motion or said handle and ineens for ejecting said block from said mold at e. subsequent similar motion of seid handle.

2. ln a. concrete block machine, in coinloinavtion with a. freine and block Jforming mold, e. plurality ol combined compressing end lifting levers operated from e single handle, e plurality or' lifting (logsl meeting with seid levers to produce first a. compres-A sion; ol' the block within the mold end then en ejection of the block from the mold et :i subsequent motion of seid handle.

3. ln e 'block forming machine, the combination with e. sup orting freine and a, removably ettiched' lock iorming mold, ol' e plurality ol compressing levers having hlock ejecting extensions, lifting dogs coacting with seid levers rstto compress seid blocks and then to eject. seid blocks, cross heads pivotolly connected with seid dogs, lifting rods attached to seid cross heads to engage pellets Within seid molds, guides carried by seid frames for seid lifting rods,

means connected with Seid compressing levers lor actuating :in upper compressing member and means for actuating said conipressing levers.

s. ln s. plestiemeterizil lormin machine, a. supporting :freine-work, a, lolo forming inolcl detechehly connected to said freinework, a, horzontel shalt carried by seid ironie-work, :i plurality oli. compressing and lifting levers xeclly attached to seid shalt, :i single handle operating seid levers, a, plurality of lifting clogs each with e. plurality of stud engaging recesses, cross heads pirotelly connected to seid dogs, lifting rods adjust-ably secured to seid cross heads,

Vguides in seid frames l'or seid rods, side hars pivotelly connected to seid compressing and lifting levers :it one extremity thereof, e compression heed pivotellyconnected to the opposite end of said side hau-s, a, pellet detechzihly secured tio seid compression heed, guides secured to seid heine and seid mold to caract-with seid side hers, :i plurality of studs in compressing and lifting levers and ineens for selectively engaging said studs lo seid recesses in seid lifting dogs, substrintially as :ind lor the purpose described..

ln testimony whereof We here signed enr nemes to this specicetion in the presence of two subscribing witnesses.

T. A.; SPERRY. Y

C. R. @WEE'HWER f l?. A.. Berlins. 

